Belt buckle



April 8, 1930. c, HN 1,753,864

"BELT BUCKLE Filed Marsh 7, 1928 Patented Apr. 8, 1930 PTENT OFFICEHENRY C; KUHNHEIM, OF NEWPORT, KENTUCKY BELT BUCKLE Application filedMarch 7,

This invention relates to an improved form of belt buckle of the type inwhich the free end of the belt is insertable and capable of being fixedat any point between the inner face of the buckle and the co-operatingclamping means.

- An object of the invention is to provide a belt buckle which inclamped position entirely prevents slipping of the belt therethrough.

Another object is to provide a buckle with a minimum of parts, makingfor simplicity and economy in manufacture.

Other objects and relationships will be apparent in the followingspecification and its accompanying drawings, of whichlatter:

Fig. 1 is a plan View of the under side of the buckle and a portion ofthe belt.

Fig. 2 is a cross sectional view of the buckle taken on line 2-2 of Fig.1.

Fig. 3 represents the clamping detail of the device.

Fig. 4 is an enlarged view on line 2-2 of Fig. 1, showing belt andbuckle in operative position. Fig. 5 is an enlarged perspective view ofthe clamp.

Preferably the buckle is manufactured from sheet metal. In the drawingsnumeral 1 points out the buckle plate; 2, the guide Ways formed bybending two equal and opposite portions of the plate into L shape incross section and bringing one of the faces of each of the portions thusbent into spaced parallelism with the under face of the plate.

The belt clamp 3, is the second and only other member of the buckle. Itis stamped from a sheet of metal and has a base 4 with a loop sectionextending therefrom. This loop section has an arm 5 parallel to thebase, around which the belt 6 is looped and secured as shown in Fig. 1.The base 4 is formed into a channel, U-shaped in cross section, thesides 13 and 14 of which channel are turned up substantially at rightangles with the plane of the remainder of the belt clamp. Pivot studs 7extend outwardly from and in parallel relation with, the bottom portionof the channellike base 4. The side of this channel which is nearest thearm 5 has extending from its top edge, 8, two spurs, 9, the formation of1928. Serial No. 259,805.

which is efiected by extruding two spurs from the edge of the top beforethe base is given its U-shape. These spurs, due to the fact that theyare extruded rather than out, are offset relative to the longitudinalcenter of the top edge 8 and have depressions immediately adjacent theirlongitudinal sides in the said top edge of the channel. Said depressionsare designated by the numeral 12. The other edge, 10, of the channel isplain, without indentations or spurs, but slightly beveled in thedirection away from the opposite side of the channel. If desired,however, both edges may be similarly indented and spurred.

The connection and interaction of plate 1 and clamp 3 will now beexplained. It has been pointed out that the guideways, 2, are L.-shapedin cross section. At one end of each guideway and at the junction of thecross sectional Ls thereof a short longitudinal cut is made so as toallow the portion of the guideways thus cleared to be rolled inward- 1yupon themselves as shown'at 11 in Fig. 2. The two opposite rolledportions 11 form bearings, in which are pivoted the pivot studs, 7 ofthe clamp 3. In positioning the clamp 3, the open channel of base 4, isfaced inwardly towards the buckle plate, 1.

In use, the free end of the belt is introduced between the guideways 2and the buckle plate 1 at the side opposite the clamp. While the freeend is being thus inserted the clamp 3 is pivotally turned downwardly oraway from the buckle plate, 1. This causes the integral base 4, and itschannel to assume a sidewise position, giving clear passageway to thebelt; when the free end of the belt has been inserted to a desiredlength the clamp is returned to its operative position most clearly Vseen in Fig. 2. It is apparent that the two edges, 8, and 10, of base 4,are thus brought into firm contact with the belt, forming, the one withits beveled edge and the other with its spurred edge, a doubly secureand nonslipping arrangement. The reverse process, 1rgflcourse, is usedin releasing the end of the Having thus set forth the structure andoperation of the buckle, what is claimed is:

1. A belt buckle comprising a plate two opposite edges of which aresimilarly bent to form belt guideways, L-shaped in cross section, thoseportions of the guideways parallel to the buckle plate beinglongitudinally I I cut for a short space at the point of juncture withthe plate and the cut away parts thus formed being rolled inwardly uponthem selves to form a pair of oppositely disposed bearings; and a clampstamped from a single sheet of material and comprising a base with aloop portion extending therefrom, the base and the arm provided by theloop portion being parallel, the longitudinal sides of the base beingturned upwardly at substantially right angles with the plane of theremainder of the clamp and forming thereby a channel along one of whosetop edges spurs are extruded, the other edge being beveled in adirection away from the opposite side of the channel, and from eitherend of which base extend pivot pins by which the clamp is pivoted ontothe bearings formed on the plate as above.

2. A belt buckle comprising a plate having strap guideways withoppositely disposed bearings thereon; and a clamp member pivoted in thebearings, the clamp member having a base with a loop portion extendingtherefrom, the longitudinal sides of the base being turned up in thedirection of the plate, one of said sides having spurs along its topedge, said spurs being offset relative to the longitudinal center ofsaid top edge, the top edge of the opposite side being beveled in adirection away from the side providing the spurs.

3. A belt buckle comprising a plate having guideways and bearingsthereon, and a clamp member pivoted in said bearings and having sidesextending in the direction of the plate, one of said sides having spursextruded from its top and offset relative to the longitudinal centerthereof.

4-. A belt buckle comprising a plate member with a clamp member plvotedthereon, the clamp member having sides extending in the direction of theplate, the longitudinal edge of one of said sides having spurs ofisetrelative to the longitudinal center of said edge and depressionsadjacent thereto.

5. A belt buckle comprising a plate mem her with strap guideways andbearings formed thereon, and a clamp member pivoted in said bearings andhaving a channeled base with two sides extending in the direction of theplate, one of the sides being beveled along its top edge, the other sidehaving spurs on its edge and offset relative to the longitudinal centerthereof and depressions adjoining the longitudinal sides of the spurs.

6. A belt buckle comprising a plate with strap guideways and bearingsthereon; and a clamp pivoted in said bearings and comprising a base inchannel form with a loop portion extending therefrom, the longitudi-

